09-25-2026, 08:45 PM
Thank you MrFixer55,
Yes, it was PB-1 was not connecting the radio. I see why they had to kill the radio section when phono is selected. The bleed through of the radio without it being connected by the switch is significant. I thought I checked it but maybe I didn't. Thank you for pushing me in the right direction!
Still need more cleaning of the selector switch. Also, I need to look at the phono cartridge match. The one I used is listed for use in a 78 RPM Rock-Ola jukebox. I thought the phono volume was good but the working radio has about 2-3X the volume. I think the fidelity when playing a record gets cut too soon since the volume control must be set much higher than the radio. Might try increasing the 1M resistor across the cartridge.
Video of set: FM then AM then phono
https://youtu.be/k5JrEgbnVio
Yes, it was PB-1 was not connecting the radio. I see why they had to kill the radio section when phono is selected. The bleed through of the radio without it being connected by the switch is significant. I thought I checked it but maybe I didn't. Thank you for pushing me in the right direction!
Still need more cleaning of the selector switch. Also, I need to look at the phono cartridge match. The one I used is listed for use in a 78 RPM Rock-Ola jukebox. I thought the phono volume was good but the working radio has about 2-3X the volume. I think the fidelity when playing a record gets cut too soon since the volume control must be set much higher than the radio. Might try increasing the 1M resistor across the cartridge.
Video of set: FM then AM then phono
https://youtu.be/k5JrEgbnVio
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